MAE212: Mechanical Properties and Processing of Engineering Materials

Cornell University, Spring 2001

Professor Nicholas Zabaras

Lecture notes

  1. Introduction: MAE212 in one lecture pdf
  2. The concept of stress pdf
  3. Hydrostatic-Deviatoric stress decomposition and the concept of strain pdf
  4. Linear elasticity pdf
  5. Atomic structure/bonding and the physical basis of elasticity pdf
  6. Lattice positions and directions pdf
  7. Miller indices and atomic packing pdf
  8. Work hardening pdf
  9. Yield criteria pdf
  10. Plastic incompressibility, flow rule, plastic work, equivalent strain and initial/sustained yielding in plane strain and axisymmetric problems pdf
  11. Point defects and atomic diffusion processes pdf
  12. Ideal strength of a crystal, edge and screw dislocations, slip systems, strain energy of a dislocation pdf
  13. Yielding in crystals and polycrystals, strengthening mechanisms pdf
  14. Phase diagrams and equilibrium microstructures pdf
  15. The TTT diagram -- Non-equilibrium microstructures -- The Martensitic transformation pdf
  16. The Hardenability test, precipitation hardening and annealing pdf
  17. The ideal work method for the analysis of deformation processes pdf
  18. The slab analysis method for extrusion and drawing processes pdf
  19. The slab analysis method for open-die forging processes pdf
  20. Introduction to rolling processes pdf
  21. The slab analysis method for flat-rolling processes pdf
  22. Sheet metal forming processes pdf
  23. Casting processes pdf
  24. Material and Process Selection and Design pdf
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Laboratory Manuals

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Homework

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Exams

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Basic course info

Credit: 4 Units.

Lectures: Tues./Thurs. 11:40 -- 12:55, Upson B17.

Official course web page: up to date information, all lecture notes, homework assignments, and other important stuff will be found at http://courseinfo.cit.cornell.edu/courses/MAE212/ (user name: guest, password: guest)

Professor: Nicholas Zabaras, 188 Frank H. T. Rhodes Hall, (607) 255-9104, zabaras@cornell.edu

Office hours: Tuesdays 2:30 -- 4:00 p.m.; Fridays 2:30 -- 4:00 p.m.

Materials Processing Laboratory Facility Manager: Jeff Tuttle, 116 Frank H.T. Rhodes Hall, jat2@cornell.edu

Laboratory Teaching assistants:

Grader: Jie Bai, jb122@cornell.edu (for regrades submit your HW to Patrick Zhang during his office hrs with a brief statement explaining your concerns)

Lecture Teaching Assistant & Office hours: Patrick Zhang, pjz1@cornell.edu, Office hrs. MW 4:30 -- 6:00 p.m., held in Upson 205.

Labs Sections: MTWTF 2:00 -- 4:25 p.m. held at Emerson Laboratory, 116 Frank H.T. Rhodes Hall.

Review Sessions:

Exam Schedule:

Textbook and optional references: The course lectures are available on the course web site. The textbook and other secondary good reference books are

These books will be on reserve in the Engineering library, but you will not need to consult them unless you want to.

Homework: assigned each Thursday and due the following Thursday in the beginning of the class. We will not accept late homework. You are allowed, even encouraged, to work on the homework in small groups, but you must write up your own homework to hand in.

Grading: Homework 10%, Laboratory participation and reports 30%, Final exam 30% and Preliminary exams 30%. You can check your grades online on the official course web site using the following: Login name = first initial + last name, Password = student ID. This is the initial setting and we encourage you to personalize your password for privacy. At the website your personal grade information is listed under the Student Tools menu bar. Excluding grades, all other information on the website is open to guest users.

Prerequisites: Statics and Strength of Materials (ENGR202), Calculus and Ordinary Differential Equations.

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Course description

This is the only field required course in Mechanical and Aerospace Engineering at Cornell University that introduces students to various topics in Materials Sciences and Engineering, Mechanics of Materials and Manufacturing Processes. In addition to a number of demanding homework sets, the students are required to actively participate in weekly experimental modules that attempt to link the modeling aspects of the course with the physics of materials and deformation/thermal processes.

Catalog description: Introduction to the broad range of mechanical behavior of materials and their processing; atomic bonding and crystalline structures, point and line defects, plastic deformation of crystals and polycrystals; hardening behavior and basic elements of plasticity; equilibrium microstructural development and time-dependent phase transformations; bulk deformation processes; the ideal work and slab analysis methods; failure of materials; materials selection.

Course objectives:

Intended audience: Mechanical and Aerospace Engineering and Materials Science Sophomores.

Syllabus

  1. Review of the Mechanics of Materials
  2. Atomic Bonding and Crystalline structure
  3. Point defects -- zero-dimensional imperfections
  4. Elements of the Theory of Plasticity
  5. Linear defects or dislocations -- one-dimensional imperfections
  6. Plastic Deformation of Single Crystals and Polycrystals
  7. Planar defects -- two-dimensional imperfections
  8. Equilibrium microstructural development
  9. Time-dependent phase transformations
  10. Material Processes
  11. Other topics
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